Those rescued were taken to the Four Ambassadors Suites Hotel on Southwest 8th Street and Brickell Avenue where Miami Fire was setting up a triage, The U.S. Coast Guard said.

The Coast Guard got a report of a capsized vessel around 5:30 p.m. It was partially submerged in six to eight feet of water and was also partially exposed. Boaters in the area were asked to be careful.

"When I arrived on scene there was 2 to 3 foot of the vessel still above the water line and immediately I was grabbing people out of the water," said Lieutenant Michael Cortes, the commanding officer of the U.S. Coast Guard's Miami Beach post.

FWC was investigating the cause of the capsizing. Authorities believe the vessel was taking people from Brickell Key to Nixon Beach and it capsized on the return trip.

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"There's some speculation that the captain of the vessel was charging people 20 dollars to transport them back and forth from Nixon beach. If that's the case he will face some other charges," Florida Fish and Wildlife Conservation Commission spokesman Jorge Pino said.

Authorities had initially said there were 32 people rescued.

In addition to Coast Guard, Miami-Dade Fire-Rescue, Sea Tow Miami and the FWC were among the agencies who assisted in the rescue.

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Meanwhile, due to budget cuts and staffing shortages, Miami-Dade Fire Rescue boats were docked this year during the Columbus Day weekend celebrations in Key Biscayne.

While Fire Rescue was available for on-land assistance, the FWC took care of patrolling the waters for injuries and officials said they were more watchful than ever.

"Every year we see the same thing," Pino said. "We see individuals that like to go out and have a good time and they do it in a respectful way without any issues, but then again you also have those individuals who go out there and they don't do it the right way."

In the last 10 years, six people have died during the Columbus Day celebrations and others have suffered from lacerations, broken bones, crush injuries, alcohol poisoning and drug overdoses. Miami-Dade County is considering selling the docked Fire Rescue boats.

While national parks like Biscayne National Park were closed due to the government shutdown, the FWC said it would patrol those areas as well.